11 Low-Flows in Polish Rivers
221
Fig. 11.9 (continued)
11.5 Low-Flow Extremes
Low-flows occurring as a result of hydrological drought can lead to a situation in
which separate branches of the national economy will record losses caused by an
excess of water needs over the disposal water resources at a specific time and space.
Therefore assessment of low-flow appearance probability and risk of potential losses
caused by water shortage is a very important component of contemporary water
management analyses.
Assessment of maximum probable low-flow duration was executed on the base
of “Ni˙ zówka 2003” software [27]. Distribution of discrete variable, connected with
the low-flow occurrence, was most well-fitting to Poisson’s function. Continuous
variable, which is an estimator of low-flow duration, was described by log-normal
distribution (Fig. 11.11). It is worth noticing that maximum low-flow duration on
221
Fig. 11.9 (continued)
11.5 Low-Flow Extremes
Low-flows occurring as a result of hydrological drought can lead to a situation in
which separate branches of the national economy will record losses caused by an
excess of water needs over the disposal water resources at a specific time and space.
Therefore assessment of low-flow appearance probability and risk of potential losses
caused by water shortage is a very important component of contemporary water
management analyses.
Assessment of maximum probable low-flow duration was executed on the base
of “Ni˙ zówka 2003” software [27]. Distribution of discrete variable, connected with
the low-flow occurrence, was most well-fitting to Poisson’s function. Continuous
variable, which is an estimator of low-flow duration, was described by log-normal
distribution (Fig. 11.11). It is worth noticing that maximum low-flow duration on